Middlings-purifier



UNITED STATES PATENT EEicE.

THEODORE H. NEANDER', OF "WATAGA, ILLINOIS.

MlDDLlNGS-PURIFIER.

SPECIFICATION forming part of Letters Fatent No. 288,844, dated November 20, 1883.

' Application filed January 12, 1883. No model.)

clear, and exact description of the invention,

such as will enable others skilled in the art to which it appertains to make and use the same,

reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

This invention relates to middlings-purifiers for grain-mills.

The invention consists in constructions and combinations hereinafter described and claimed.

' In the accompanying drawings, which illustrate my invention, Figure 1 is a vertical sectional elevation lengthwise of the device. Fig. 2 is a sectional elevation in'linc w a: in Fig. 1. Fig. 3 isasectional elevation in line 2 y in Fig. 1. i

Referring to the drawings by letters, the same letter where used indicates the same part in the different figures.

A represents the bolt, with a contracted,

portion, a, of its frame at each end. The bolt is journaled upon the perforated tube, which serves as astationary shaft for the bolt, and may be supported in any desired manner. The contracted portions a may also be in frictional contact with pulleys or rollers B, which constitute the bearings in which the bolt is rotated. The pulleys or rollers 13 are journaled in any suitable frame, such frame not being shown in the drawings. The contracted bolt-frame at one end of the bolt is extended, and carries a sprocket-wheel, G, which gears by a chain belt with another sprocket-wheel, G. The wheelO receives rotary motion from any desired source. and imparts the same kind of motion to wheel G and to the bolt.

D is a tube or pipe extending lengthwise through the bolt A, closed at its end d, which extends beyond vthe bolt A for the feed-spout to enter the latter, and its other end extends outwardly through the sprocket-wheel O and into communication with an ordinary exhaustfan, E. One side of the tube- D is perforated with holes (2, preferably in about the circumferential positions shown at Fig. 3, and extending lengthwise of the tube, as shown at Fig. 1.

F is a slide-valve located in the tube D- at its entrance to the eXhaus'td'a-n. It may be located in the side of the exhaust-fan, if preferred. The tube D is fixed in position, and has an inclined shelf, 9, attached to it, and ex tending along above the holes (1, as shown, and also a shelf, (1, as shown.

H are ribs on the interior side of the bolt and lengthwise thereof.

I is a spout, which is shown in the drawings as extending downwardly through the tube D and into the bolt. The middlings will thus be delivered outside of the perforated tube, which carries off the bran and forms a partition between the eXhaust-fan and middlings, to prevent the finer parts of the latter from entering the bran-pipe. By placing the feed-spout in this manner the necessity for making provision in the bolt for said spout is obviated.

The bolt A may be formed in any manner which will permit the passage of the tube D. The Letters Patent No. 265,428. granted to me October 3, 1882, show a construction of bolt well adapted for the purpose. For the better separation of the iniddlings, the bolt-cloth should be of a few different'grades of fineness of mesh-the finer next the closed end of the tube ID, and the coarser at its other end.

In practice I prefer to locate my device in the same boltchest or frame which carries the flour-bolt, and immediately beneath said flourbolt, so that after the finer flour is separated by the flour-bolt the remainder may pass through the spout I and into my bolt A. The end of the bolt A which receives the middlings is higher than the other end, so that the bolt-cloth, and thence through the holes (1 in the tube I), and outward through said exhaust-fan. The middlings received in the 2 se'asaa bolt, as hereinbefore described, are carried upward by the ribs H as the bolt rotates in the direction shown by the arrow at Fig. 3,

and, falling from said ribs through the spaces shelf 9 will receive material carried upwardly above the holes in the tube D, and serve to deflect it and allow it to fall clear of said tube D, and the shelf d will catch material carried still farther and carry it back onto the shelf 9.

The valve F maybe adjusted to regulate the force of the blast through the bolt-cloth and tube D.

I have shown and described herein one arrangement of the suction-blast tube, also one means or way of feeding the middlings to the bolt; but in these exact features or arrangements I do not limit my invention.

What I claim as new is 1. In a middlings-purifier, the combination of a rotary bolt or *sieve, a stationary perforated tube having its ends extending beyond the bolt at each end and forming a shaft for said bolt, a feed-spout passing through said tube from the extension at one end to' the in side of the bolt or sieve, and a suction-fan, substantially as described.

2. In a middlings-purifier, the combination of a rotary bolt or sieve, a suction-fan, a stationary tube perforated upon its under side,

and extending beyond the bolt at each end, and forming a shaft for said bolt, and a feedspout passing through the tube, and opening in the bolt beneath said tube at the end opposite the suction device, substantially as described.

3. Ina middlings-purifier, the combination of a rotary sieve or bolt having ribs H, the suction-fan, the suction-tube D, forming a stationary shaft for said bolt, having perforations in its under side, and shelves arranged.

tangentially upon the tubes above the perforations, substantially as described.

4. In a middlings-purifier, the combination of a rotary sieve or bolt having ribs H, the suction-fan, the suction-tube D, having perforations in its under side, and shelves 9 and (1, arranged tangentially upon the tubes above the perforations, substantially as described.

5. The combination of a bolt, supportingpulleys, substantially as described, the perforated tube D, extending beyond the ends of the bolt, the suction-fan, and a feed-spout entering through one of the extended ends of the tube D, and passing through said tube to the interior of the bolt, substantially as described.

6. The combination of a rotary bolt, a stationary perforated tube extending beyond the rotary bolt and closed at one end, a suctionfan attached to the open end, and a valve in said tube outside the bolt, and between the latter and the suction-fan, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

THEODORE H. NEANDER.

IVitne's'ses:

SAML. N. GRosE, E. D. AIKEN. 

